Apple's annual developer conference in San Francisco.
Metallic MacBooks Spotted on Apple Campus
Though noticeably thinner but otherwise similar in size to the company's 13-inch MacBooks, the notebook appeared to have a metallic sheen to it, which set it apart from the current black MacBook.
The report is reminiscent of a 9to5mac report that indicated that new MacBook enclosures made of black and silver aluminum had previously been spotted by their sources.
Rumors of a sub-notebook laptop have been building as we approach Macworld San Francisco. Our rumor roundup summarizes the predictions to date.